Appeal No. 1999-2283
Application No. 08/690,525
The claimed invention relates to a magnetic head
structure in which the head face is provided with a first
corrosion insensitive material layer and a second layer of
wear-resistant material which is more insensitive to corrosion
than the first material layer. According to page 2 of
Appellants’ specification, the second layer, which includes a
contact face for cooperation with a record carrier, protects
the magnetic head from abrasive and corrosive wear.
Claim 11 is illustrative of the invention and reads as
follows:1
11. A magnetic head having a head face and comprising a head
structure provided with a transducing gap, said transducing
gap terminating in said head face, different materials being
present in different areas of the head face, characterized in
that the head face is provided at the transducing gap and at
both sides thereof with a first layer of a material which is
more sensitive to corrosion than said materials of the head
face, and the first layer is provided, at the transducing gap
and at both sides thereof, with a second layer of a wear-
resistant material that is more insensitive to corrosion than
the material of the first layer.
The Examiner relies on the following prior art:
1Contrary to the Examiner’s indication at page 3 of the Answer, the
copy of claim 11 presented in the Appendix to Appellants’ Brief filed October
14, 1997 (paper No. 29) is correct since it reflects the changes added by the
amendment filed May 7, 1997 (Paper No. 25) after final rejection, which was
entered by the Examiner.
2
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